From nobody Mon Feb 9 00:20:43 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 924E117999; Thu, 22 Aug 2024 01:25:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289937; cv=none; b=VPTPfwnhRjwvLtinUgs7tXm/5o/1F8dmyYdcsMV+RtmrBQSKpPzx5I1124oKQVGhhokHGh3bo2hsR0Crarmw98+ak4Dsnr6VbNyIfFuX04sJHpBT7aNmOoRWXHcIpYxUQhO/hYDYVzc+wzBnBsiO+PkW8lS4wQtXAZ33oSeJGjo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289937; c=relaxed/simple; bh=42X8Gh2L7dyGjX3VvIUPml7cHJOMOyQ+YrI4+eJU3i0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OqTdXNRGaWzVQyASu0FI4nb/iAgp2xFi5HTapBlg47e+xSHmK/YP9sPLrhv/LbDvbxZjyA+CQ+W40W80DJi1zDbPO6qY0RdvKibqIg5bsQ59iRrH9oLVt9JzPXMNGb08VSm4XNl8w3q0WdqHc7OI8tlq9YdMkLndvgkZ07kb3qI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=WHmnCkMz; arc=none smtp.client-ip=192.198.163.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="WHmnCkMz" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724289936; x=1755825936; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=42X8Gh2L7dyGjX3VvIUPml7cHJOMOyQ+YrI4+eJU3i0=; b=WHmnCkMzcpAArlpU/1n1pOf/2S4t9De+DqnDi/G4pAyyfzDQK0IHzp93 GRpWZseM5RU2S1tMQ7GF6UwbhVOHBWfQdKRMsqlOwNQakbBI3+q/IbWCW JONEuakkjR9f8gArAm/QTHmbaWZ2sUkTBH9ZtyqW+wN/E7tzPQ7pF55UB 0fJLVTifEckqrwdIsJjaqbIZ2nZvX9yAqOoNTgfDoBzXMe0STpdbb2Clt KA8uq603mu8t/X1bvkbSGh1iVkSDO9F9pBX+MopmD1mqdWQf/UiHDYgeu 2UHb67HrJ3X1vuqISfWczyIz3723LeJdn2MMXug92MDEjH81D7c/Rds0b Q==; X-CSE-ConnectionGUID: 17BLysSrSdW9adgyZsr62g== X-CSE-MsgGUID: u2M5jakyT7W1o0omAvAYxA== X-IronPort-AV: E=McAfee;i="6700,10204,11171"; a="25574729" X-IronPort-AV: E=Sophos;i="6.10,165,1719903600"; d="scan'208";a="25574729" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2024 18:25:32 -0700 X-CSE-ConnectionGUID: tiVfE80JT/CoE3tM7yMKJA== X-CSE-MsgGUID: qN8Nln/PSDqc4gyj4eZOyA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,165,1719903600"; d="scan'208";a="61811024" Received: from unknown (HELO vcostago-mobl3.jf.intel.com) ([10.241.225.92]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2024 18:25:32 -0700 From: Vinicius Costa Gomes To: brauner@kernel.org, amir73il@gmail.com, hu1.chen@intel.com Cc: miklos@szeredi.hu, malini.bhandaru@intel.com, tim.c.chen@intel.com, mikko.ylinen@intel.com, lizhen.you@intel.com, linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Vinicius Costa Gomes Subject: [PATCH v2 03/16] fs/overlayfs: Introduce ovl_override_creds_light() Date: Wed, 21 Aug 2024 18:25:10 -0700 Message-ID: <20240822012523.141846-4-vinicius.gomes@intel.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240822012523.141846-1-vinicius.gomes@intel.com> References: <20240822012523.141846-1-vinicius.gomes@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Will be used when there are guarantees that the credentials usage count is not modified in the critical section. This is a temporary helper, that will be removed when all users are converted to use the credentials GUARD() helpers. Signed-off-by: Vinicius Costa Gomes --- fs/overlayfs/overlayfs.h | 1 + fs/overlayfs/util.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 0bfe35da4b7b..557d8c4e3a01 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -429,6 +429,7 @@ int ovl_want_write(struct dentry *dentry); void ovl_drop_write(struct dentry *dentry); struct dentry *ovl_workdir(struct dentry *dentry); const struct cred *ovl_override_creds(struct super_block *sb); +const struct cred *ovl_override_creds_light(struct super_block *sb); =20 static inline const struct cred *ovl_creds(struct super_block *sb) { diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c index edc9216f6e27..3525ede21600 100644 --- a/fs/overlayfs/util.c +++ b/fs/overlayfs/util.c @@ -68,6 +68,13 @@ const struct cred *ovl_override_creds(struct super_block= *sb) return override_creds(ofs->creator_cred); } =20 +const struct cred *ovl_override_creds_light(struct super_block *sb) +{ + struct ovl_fs *ofs =3D OVL_FS(sb); + + return override_creds_light(ofs->creator_cred); +} + /* * Check if underlying fs supports file handles and try to determine encod= ing * type, in order to deduce maximum inode number used by fs. --=20 2.46.0